Canister



FIG. 1 is a top plan view of a canister showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a cross-sectional view thereof through the vertical axis;

FIG. 5 is a top perspective view thereof; and

FIG. 6 is a bottom perspective view thereof. 

The ornamental design for a canister, as shown. 